精益求精

bái qiú ēn shì gè yī shēng tā zài gōng zuò fāng miàn jīng yì qiú jīng

白求恩是个医生，他在工作方面精益求精。

Bethune was a doctor, and he was very good at his work.

tā zài yè wù shang jīng yì qiú jīng

她在业务上精益求精。

She constantly improves and perfects her professional skill.

shēn wéi yīn yuè jiā tā duō nián lái bù duàn jīng yì qiú jīng

身为音乐家，她多年来不断精益求精。

As a musician, she has spent years perfecting her technique.

jì shù jīng yì qiú jīng

技术精益求精

be constantly improving one's skill